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/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <sys/stat.h>
#include <sys/types.h>
#define LEADER_XATTR "user.nsr.leader"
#define SECOND_CHILD(xl) (xl->children->next->xlator)
enum {
gf_mt_nsr_private_t = gf_common_mt_end + 1,
gf_mt_nsr_fd_ctx_t,
gf_mt_nsr_inode_ctx_t,
gf_mt_nsr_dirty_t,
gf_mt_nsr_end
};
typedef enum nsr_recon_notify_ev_id_t {
NSR_RECON_SET_LEADER = 1,
NSR_RECON_ADD_CHILD = 2
} nsr_recon_notify_ev_id_t;
typedef struct _nsr_recon_notify_ev_s {
nsr_recon_notify_ev_id_t id;
uint32_t index; // in case of add
struct list_head list;
} nsr_recon_notify_ev_t;
typedef struct {
char *etcd_servers;
char *subvol_uuid;
char *leader_key;
char *term_key;
char *brick_uuid;
gf_boolean_t leader;
uint8_t up_children;
uint8_t n_children;
char *vol_file;
etcd_session etcd;
volatile unsigned int fence_io;
uint32_t current_term;
#ifdef NSR_DEBUG
uint32_t leader_log_fd;
#endif
volatile int recon_notify_inited;
volatile int leader_inited;
uint32_t kid_state;
gf_lock_t dirty_lock;
struct list_head dirty_fds;
gf_boolean_t nsr_recon_start;
void * recon_ctx;
volatile uint32_t ops_in_flight;
uint32_t index;
gf_lock_t index_lock;
double quorum_pct;
} nsr_private_t;
typedef struct {
call_stub_t *stub;
call_stub_t *qstub;
uint8_t call_count;
fd_t *fd;
struct list_head qlinks;
} nsr_local_t;
/*
* This should match whatever changelog returns on the pre-op for us to pass
* when we're ready for our post-op.
*/
typedef uint32_t log_id_t;
typedef struct {
struct list_head links;
log_id_t id;
} nsr_dirty_list_t;
typedef struct {
fd_t *fd;
struct list_head dirty_list;
struct list_head fd_list;
} nsr_fd_ctx_t;
typedef struct {
gf_lock_t lock;
uint32_t active;
struct list_head aqueue;
uint32_t pending;
struct list_head pqueue;
} nsr_inode_ctx_t;
void nsr_recon_notify_event_set_leader(nsr_private_t *priv);
void nsr_recon_notify_event_add_child(nsr_private_t *priv, uint32_t index);
void* nsr_recon_notify_thread (void *this);
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